6a24474da8
percpu_ref_get/put() are using preempt_disable/enable() while percpu_ref_kill() is using plain call_rcu() instead of call_rcu_sched(). This is buggy as grace periods of the two may not match. Fix it by using plain RCU in percpu_ref_get/put(). (I suggested using sched RCU in the first place but there's no actual benefit in doing so unless we're gonna introduce different variants of get/put to be called while preemption is alredy disabled, which we definitely shouldn't.) Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Kent Overstreet <koverstreet@google.com> |
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| clocksource | ||
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| linux | ||
| math-emu | ||
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| misc | ||
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| Kbuild | ||